## January 25, 2014

Post puzzles for others to solve here.

### January 25, 2014

Code: Select all
` *-----------* |..2|.6.|..1| |..6|5..|.4.| |.4.|8..|2..| |---+---+---| |98.|...|4..| |...|425|...| |..1|...|.65| |---+---+---| |..9|..8|.1.| |.6.|..9|8..| |3..|.4.|6..| *-----------*`

Play/Print this puzzle online
dan

ArkieTech

Posts: 3355
Joined: 29 May 2006
Location: NW Arkansas USA

### Re: January 25, 2014

Code: Select all
`*--------------------------------------------------------------*| 578   3579  2      | 37    6     4      | 3579  3578  1      || 178   1379  6      | 5     137   2      | 379   4     378    ||a57-1  4     37     | 8     9     137    | 2    b357   6      ||--------------------+--------------------+--------------------|| 9     8     5      | 137   137   6      | 4     237   237    || 6     37    37     | 4     2     5      | 1     89    89     || 4     2     1      | 9     8     37     | 37    6     5      ||--------------------+--------------------+--------------------|| 2     57    9      | 6     357   8      | 357   1     4      ||e17-5  6     4      | 1237  1357  9      | 8     2357  237    || 3    d157   8      | 127   4     17     | 6    c2579  279    |*--------------------------------------------------------------*`

L2 Wing: (5) r3c1 = r3c8 - r9c8 = (5-1) r9c2 = (1) r8c1 => - 1 r3c1, - 5 r8c1; stte

Leren
Leren

Posts: 3887
Joined: 03 June 2012

### Re: January 25, 2014

Initially, I noted some single digit steps including multi-coloring on 1, coloring on 3 & 5, and the skyscraper on 5 that completed the puzzle. Looking again, I realized the combination of the skyscraper(5) and the strong link on 1 in box 7 was sufficient to complete the puzzle.

Skyscraper(5)r39c8 with pincers 5r3c1 & 5r9c2 => r1c2, r8c1<>5.

Then working with the pincers: 5r3c1=(5-1)r9c2=1r8c1 => r3c1<>1

Finally, as I prepared to post my solution, I saw that Leren had already posted it.

Ted
tlanglet
2010 Supporter

Posts: 538
Joined: 29 May 2010

### Re: January 25, 2014

Leren's L2-Wing is the only single-stepper chain that my solver located. Also, all of the simpler network solutions seem to include portions of the L2-Wing.
daj95376
2014 Supporter

Posts: 2624
Joined: 15 May 2006

### Re: January 25, 2014

Code: Select all
`+-------------+---------------+---------------+| 578 3579 2  | 37   6    4   | 3579 3578 1   || 178 1379 6  | 5    137  2   | 379  4    378 || 157 4    37 | 8    9    137 | 2    357  6   |+-------------+---------------+---------------+| 9   8    5  | 137  137  6   | 4    237  237 || 6   37   37 | 4    2    5   | 1    89   89  || 4   2    1  | 9    8    37  | 37   6    5   |+-------------+---------------+---------------+| 2   57   9  | 6    357  8   | 357  1    4   || 157 6    4  | 1237 1357 9   | 8    2357 237 || 3   157  8  | 127  4    17  | 6    2579 279 |+-------------+---------------+---------------+`

Play this puzzle online at the Daily Sudoku site

I'm wimping out with a two-stepper.

Sashimi X-Wing (1), r38=>r9c6<>1
Skyscraper (5), r39 finishes it off
Marty R.

Posts: 1508
Joined: 23 October 2012
Location: Rochester, New York, USA

### Re: January 25, 2014

Code: Select all
`+-------------------+-------------------+---------------------+| 578    3579    2  | 37    6     4     | 3579  357(8)  1     || 7(18)  1379    6  | 5     137   2     | 379   4       37(8) || 57(1)  4       37 | 8     9     37(1) | 2     357     6     |+-------------------+-------------------+---------------------+| 9      8       5  | 137   137   6     | 4     237     237   || 6      37      37 | 4     2     5     | 1     (89)    89    || 4      2       1  | 9     8     37    | 37    6       5     |+-------------------+-------------------+---------------------+| 2      57      9  | 6     357   8     | 357   1       4     || 57(1)  6       4  | 1237  1357  9     | 8     2357    237   || 3      7-1(5)  8  | 127   4     7(1)  | 6     27(59)  279   |+-------------------+-------------------+---------------------+`

Almost Skyscraper (found by code) ...

5r9c2 = (5-9)r9c8 = (9-8)r5c8 = r1c8 - r2c9 = (8-1)r2c1 = (Skyscraper: (1)c16\r3) => r9c2<>1; stte
blue

Posts: 894
Joined: 11 March 2013